What you see here is a shared easement used for access for four properties. We did a renovation to the rear of the new building which you can see has the new roller door.
The renovation consisted of new bath , kitchen, living, deck and garage. The boards drainage mains ran under the new garage footprint so we were required to encase these as a first step at no small expense [about 10k].
The client was required at his expense to do a new driveway on the easement to the far boundary of his property for the benefit of all 4 owners. There is no cost sharing as with new fences to adjoining properties.